From may to september, the worst time of day for pollution is during what hours?

3:00 -7:00 PM

During this time the maximum vehicles are on road such as taxi, buses and moreover, maximum commuters come to their home after their office hours. The roads are overcrowded with students and commuters which increase traffic and pollution which cause ozone and particle matter 2.5 has maximum effect during these hours.

Moreover, pollution can generate persistent harm to the lungs. If an infection caused by poor air condition is frequent, the lungs can end up with a scar membrane due to the shedding of contaminated cells.